COMING SOON: simple project

[chucky]

Want to get into repeaters better with your Hand Held? If you have a handheld that has a detachable antenna, you're in business with a portable compact GAIN antenna with directional properties that you can build with simple materials. Having an antenna with Gain is like increasing your TX power......... NO this works, I made one  :icon_geek:

Details to follow

[ Note to Admin please can you make a "technical" page to move this to? ]

[King_DaVo]

Shit yeah,   Also known as ERP (Effective Radiated Power) . e.g Formula for my base setup. Say 10-15watts from my radio into my yagi array of 18-20dBi gain = Actual tx Power multiplied and coming out of the yagi = Aprox 1,000 watts ERP.   Killing my brain cells  

(This is approx figures not actual worked out exact figures).    :laughing4:

[cOOter]

[ Note to Admin please can you make a "technical" page to move this to? ]

admin_monkey is hung over on banana jiuce. He said ouuuoo, ouuu, ouuuu. which is monkey for okie dokie. 

[admin]

Upload area for Chucky's Project pics...
http://www.goldcoastcb.com/forum/index.p...lery;cat=6

I'm not sure how you want to do this, so start by uploading pics there to get started

Upload area for others..
http://www.goldcoastcb.com/forum/index.p...on=gallery

[chucky504]

Sorry for the delay in the project page. I will work on it this weekend. 

[King_DaVo]

Comon, hurry up  :blob7:

[cOOter]

Keep ya socks on  DaVo, Chucky is coming over Monday ta get it all done.

Comon, hurry up  :blob7:

[chucky504]

Ok Ok its done. Thanks for the help admin monkey. Chill DaVo :hal:

[chucky]

EMERGENCY ANTENNA from coax. This is for 2 metres, but the formula is the same, just put in 477 mhz instead. This gives you a vertical 1/2 wave dipole. Another good project to improve a handhelds' performance

http://www.hamuniverse.com/vertbazooka.html

[chucky]

Experience has shown that you need to start 'long' with the radiating element. using a swr meter trim for lowest swr. A piece of aluminium or copper tubing can be substituted for folding the braid back over itself. To do this just trim off most of the braid and attach a tail of twisted braid to the tubing like a Neighbour sleve balun.